Science and Research Projects

Description

Full title: Organic dairy cows: milk yield and lactation characteristics in thirteen established herds and development of a herd simulation model for organic milk production

Main objective:
The main objective of the project is to gain better understanding of the production characteristics of dairy cows under organic management. This objective is achieved by sub-objectives that will produce information about lactation curves and milk yield characteristics of organic cows and about the effect of organic management on the production of cows with different genetic potential.

Research description:
Using retrospective milk recording data from 13 organic dairy herds, the nature of lactation curves and associated herd parameters will be established. Based on the results, a herd simulation model will be developed to characterise production profiles in organic dairy herds.

Policy relevance:
The research is relevant to MAFF policy in regard to support of the developing organic livestock production sector to provide information to producers to improve output and livestock performance, develop improved husbandry methods, maintain high standards of animal welfare and to meet the standards of organic production.

Intended use of results:
- The findings of the lactation and herd performance parameters will enable the formulation of appropriate advice for organic and converting farmers with regard to the design of feeding, feed production strategies and fertility management that meet the needs of their herds and optimises the yields of the cows.
- The herd simulation model will be useful for further research in organic dairy cow management.
- The project results will give overall guidance to further research in organic dairy cow feeding, breeding and management.

Objective

The overall objective of the study is to improve the understanding of the production characteristics of organically managed dairy cows. The subobjectives are:
1. To produce information about lactation curves and milk yield characteristics of organic cows;
2. To produce information on the effect of organic management on the production of cows with different genetic potential; and
3. To create a herd simulation model that would be useful for further research in organic dairy cow management.